´It was narrated that Abu Sa'eed Al-Khudri said:` "My two eyes saw the traces of water and mud on the forehead and nose of the Messenger of Allah (ﷺ), from his praying Qiyam on the night of the twenty-first."
Hadith Referenceسنن نسائي / كتاب التطبيق / 1096
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه